Cerebrospinal fluid diversion

A medical procedure to treat hydrocephalus and other conditions

Cerebrospinal fluid diversion
Synonyms	CSF diversion
Pronounce	N/A
Specialty	N/A
Symptoms	N/A
Complications	Infection, shunt malfunction
Onset	N/A
Duration	N/A
Types	N/A
Causes	N/A
Risks	Infection, bleeding, over-drainage
Diagnosis	N/A
Differential diagnosis	N/A
Prevention	N/A
Treatment	Surgical intervention
Medication	N/A
Prognosis	N/A
Frequency	N/A
Deaths	N/A

Cerebrospinal fluid diversion is a medical procedure used to treat conditions that involve the accumulation of cerebrospinal fluid (CSF) in the brain, such as hydrocephalus. This procedure involves the surgical implantation of a device, commonly known as a shunt, to redirect the flow of CSF from the ventricular system of the brain to another part of the body where it can be absorbed.

Indications

Cerebrospinal fluid diversion is primarily indicated for the treatment of hydrocephalus, a condition characterized by an abnormal buildup of CSF in the brain's ventricles. This can lead to increased intracranial pressure and can cause symptoms such as headaches, nausea, vomiting, and cognitive difficulties. Other indications for CSF diversion include:

• Normal pressure hydrocephalus
• Idiopathic intracranial hypertension
• Spina bifida
• Chiari malformation
• Intracranial cysts

Types of CSF Diversion

There are several types of CSF diversion procedures, each tailored to the specific needs of the patient:

Ventriculoperitoneal Shunt

The most common type of CSF diversion is the ventriculoperitoneal shunt (VP shunt). This involves placing a catheter in the brain's ventricles, which is then tunneled under the skin to the peritoneal cavity in the abdomen, where the CSF can be absorbed.

Ventriculoatrial Shunt

In a ventriculoatrial shunt, the catheter is directed to the right atrium of the heart. This type of shunt is used when the peritoneal cavity is not suitable for CSF absorption.

Lumboperitoneal Shunt

A lumboperitoneal shunt involves diverting CSF from the lumbar subarachnoid space to the peritoneal cavity. This is often used for conditions like idiopathic intracranial hypertension.

Endoscopic Third Ventriculostomy

Endoscopic third ventriculostomy (ETV) is a procedure that creates an opening in the floor of the third ventricle, allowing CSF to bypass an obstruction and flow towards the basal cisterns. This is an alternative to shunt placement in certain cases.

Complications

While CSF diversion procedures are generally effective, they are not without risks. Common complications include:

• Shunt infection
• Shunt malfunction or blockage
• Over-drainage of CSF, leading to subdural hematoma
• Abdominal complications in the case of VP shunts

Prognosis

The prognosis for patients undergoing CSF diversion depends on the underlying condition and the success of the procedure. Many patients experience significant relief from symptoms and improved quality of life. However, lifelong follow-up is often necessary to monitor for complications or shunt failure.

Also see

• Hydrocephalus
• Neurosurgery
• Intracranial pressure
• Ventricular system